Founded in 1990, China Wudung Optics Co., Ltd. is a China rifle scope parts manufacturer and supplier which is engaging in photoelectric instruments and optic instruments. Our company has the capacity of complete machine process, spray-paint on surface, electron process, optics assembling. We have own custom rifle scope parts review, research and development center, production line, marketing and after-sales service department and molding, injection, painting and silk printing workshops. About 60% of our orders are OEM or ODM. We can offer you R&D services that cover market research, design, mold making, samples, trial production and market testing.

Nikon Buckmaster Scope 4x40 Nikoplex Black Matte, Millions of deer have been taken by hunters using 4x scopes, and for good reason. A wide field of view and gigantic 10mm exit pupil make this scope a natural for the brush rifle, carbine, muzzleloader, or shotgun. Finish: Matte Reticle: Nikoplex Actual Magnification: 4x Objective Diameter: 40mm Exit Pupil: 10mm Eye Relief: 3.6" Field of View @ 100yds: 26.5ft Length: 13.1" Weight: 14.8oz Parallax Setting: 100yds, Mfg No: 6400, Manufacturer: Nikon, Warranty: Lifetime Full Warranty. If any product is found to have defects in workmanship or materials, Nikon will, at their option, repair or replace it at no charge, even if you're not the original owner. The size of the exit pupil for a riflescope is determined by dividing the objective lens diameter by the magnification rating. The human eye pupil diameter ranges from 2 to 7 millimeters, depending on the amount of light. For proper light gathering potential, the diameter of the scope's exit pupil must be equal to or greater than the diameter of your eye pupil at the light level you will be using the scope. If you're working in low light, your exit pupil size will be of greater importance. With a 10 millimeter exit pupil, the Nikon 6400 4 x 40 Buckmasters matte riflescope is an excellent choice for hunting in low light.

The Nikon 6400 4 x 40 Buckmasters matte riflescope is a rugged, waterproof, shockproof and fogproof scope. Put through an advanced vacuum process that removes virtually all air and water molecules, the scope's tube is then filled with nitrogen and O-ring sealed. This process ensures that the Nikon 6460 will perform under the most stringent of field conditions without suffering any effects of fogging or condensation. The precision-ground and polished optical glass is coated with Nikon's exclusive Brightvue coating that allows 92 percent light transmission, giving you super clarity and high resolution. Positive, audible, manual 0.25 MOA (Minute of Angle) windage and elevation adjustments eliminate reticle creep or backlash. The scope features Nikon's specially designed Nikoplex reticle that is composed of a thick outer crosshair that steps down to a finer crosshair at the center. This feature leads your eye to the point of focus and allows for quick, easy targeting. The Nikon 6400 features a 4x magnification and a large, 40 millimeter objective lens diameter, giving the scope an exit pupil size of 10 millimeters. A 4x scope makes the image appear four times larger than with the eye alone. In other words, objects at 100 yards appear to be only 25 yards away through a 4x scope.

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